Call Number (LC) Title Results
EBD I28.23-2170.D Recovery of gold from black sand tailings 1
EBD I28.23-2171.D Talc mining in New York 1
EBD I28.23-2173.D Effect of ultra-violet rays on eye 1
EBD I28.23-2174.D Our future supplies of petroleum products 1
EBD I28.23-2175.D Danger in using Army gas masks in mines 1
EBD I28.23-2176.D Possibilities of producing oil from oil shale 1
EBD I28.23-2177.D Petroleum experiment station of Federal Bureau of Mines at Bartlesville, Okla 1
EBD I28.23-2178.D Uses of sulphuric acid 1
EBD I28.23-2179.D Asbestos in South Africa 1
EBD I28.23-2180.D Refining problems 1
EBD I28.23-2181.D Slate mining in Maine 1
EBD I28.23-2182.D Recoverable oil in by-product sands and outcrops 1
EBD I28.23-2183.D Use of bituminous coal as water-gas generator fuel 1
EBD I28.23-2184.D Coal-washing work at Northwest experiment station, Seattle, Wash 1
EBD I28.23-2185.D Analyses of air from burning buildings 1
EBD I28.23-2186.D Methods for judging of first-aid contests 1
EBD I28.23-2187.D Sparks from steam shovels and locomotives as causes of premature explosions 1
EBD I28.23-2189.D Fuel wastes in oil-field boilers for drilling and production 1
EBD I28.23-2190.D Mining and preparation of tripoli 1
EBD I28.23-2191.D Treating natural-gas gasoline to meet "doctor test" 1